---
cve: "CVE-2026-47086"
severity: "LOW"
cvss: 3.5
epss: "18%"
vendor: "cyrusimap"
kev: false
exploited: false
published: "2026-07-16 19:16:49"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T09:32:49+02:00"
---

# CVE-2026-47086

> 3.5 LOW

## Beschreibung

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. GENURLAUTH-issued tokens can bypass ACLs. Any authenticated user could mint a URLAUTH token (via the GENURLAUTH command) for any mailbox they could name, even without read access on it. This would allow reading mail from mailboxes despite having no granted permissions.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Referenzen

- <https://www.cyrusimap.org/imap/download/release-notes/index.html>
- <https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.3.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-47086) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_